Abstract: A presence communication system capable of efficiently reducing the number of messages exchanged between presentities and watchers, thereby preventing lowering in communication quality. A presence server sets a group identifier as an identifier which is used to collectively look up a group of multiple pieces of presence information provided by presence information providers who have agreed to a use policy, aggregates and stores the presence information under the group identifier, and delivers the presence information requested to the group identifier. Each presentity provides the presence server with its presence information targeted to the group identifier. Each watcher requests the group identifier for the presence information provided by the presentities, and receives the presence information delivered from the presence server.

Abstract: The present invention provides a presence information management system, a presence server device, a gateway device and a client device, which notify of presence information in realtime while restraining communications traffic. The presence server device managing presence information of a plurality of presentities, comprises a delegating unit sending delegating notification of presence information management function related to at least one of the plurality of presentities, to another device becoming a delegatee of the presence information management function. The gateway device comprises a managing unit managing presence information of a presentity, and a control unit performing control so that, when receiving the delegating notification of the presence information management function about at least one of the plurality of presentities from a presence server, the managing unit is executed with respect to the function-delegated presentity.

Abstract: A network service system of the present invention comprises a temporary user identifier update request transmitting side device which provides a first service to a user and can transmit a request to update a temporary user identifier shared within a system; a temporary user identifier update request receiving side device which is connected to the temporary user identifier update request transmitting side device by a network and can receive the update request from the temporary user identifier update request transmitting side device, for providing the second service cooperating with the first service using the updated temporary user identifier; and a user proxy device which is connected to the temporary user identifier update request transmitting side device and the temporary identifier update request receiving side device by the network, and with which the user receives the two services.

Abstract: A subscriber notifies a concentrator of a desired target identifier. An originator collects target identifiers received by a sensor which receives a target identifier transmitted from a target device. The originator transmits the collected target identifiers to the concentrator. The concentrator notifies the subscriber of the originator when the target identifiers transmitted from the originator includes the desired target identifier. The subscriber notifies the originator of a specification. The originator transmits a message to the subscriber in accordance with the specification, the message including the desired target identifier and other target identifiers received at about the same time as the desired target identifier.

Abstract: By providing a load measuring unit measuring the load of a cache server, an overflown load determination unit determining whether the measured load is overflown, by comparing the measured load with a predetermined value, a connection destination retrieval request information transmitting unit transmitting connection destination retrieval request information for requesting to search for the connection destination of a load source cache server, to a contents server if it is determined that the load is overflown, a connection destination information receiving unit receiving connection destination information indicating the retrieved connection destination, from the contents server that has transmitted the connection destination retrieval request information and a switch request transmitting unit transmitting switch request information for requesting to switch the connection to the connection destination indicated by the connection destination information, based on the received connection destination information,

Abstract: In a content retrieval system where an update frequency of content is extremely high, based on a content reference request from a client which generates the content reference request including unique information and an attribute of a desired content, a cache server checks a presence/absence of a cache of the content, caches the content from a content server to transmit the content to the client in the absence of the cache of the content, or transmits the content held to the client in the presence of the cache of the content. Then, the cache server performs synchronization mirroring with the content server based on the attribute.

Abstract: If no encryption key necessary for performing encrypted communication to opposite communication terminal 6 exists, subscriber terminal 5 transmits key exchange proxy request message to service control unit 1. The service control unit 1 transfer the key exchange proxy request to key exchange proxy server 2 based on service profile transmitted from authentication server 3. The key exchange proxy server 2 decides key by transmitting/receiving key exchange message to/from the opposite communication terminal 6. A message including the decided key is transmitted to the service control unit 1. The service control unit transfer the message from the key exchange proxy server 2 with the key to the subscriber terminal 5 based on the service profile. Then, encrypted communication between the subscriber terminal 5 and the opposite communication terminal 6 is performed.

Abstract: A network service system of the present invention comprises a temporary user identifier update request transmitting side device which provides a first service to a user and can transmit a request to update a temporary user identifier shared within a system; a temporary user identifier update request receiving side device which is connected to the temporary user identifier update request transmitting side device by a network and can receive the update request from the temporary user identifier update request transmitting side device, for providing the second service cooperating with the first service using the updated temporary user identifier; and a user proxy device which is connected to the temporary user identifier update request transmitting side device and the temporary identifier update request receiving side device by the network, and with which the user receives the two services.

Abstract: A registration request for relation information between objects is received from a user terminal, and object relation information containing a type of relations between objects and a relation direction represented by a linking source and a linking destination is stored in a storage device in response to the registration request.

Abstract: A linkage information management server includes a linkage information storage unit storing linkage information relating a first identifier for identifying a first device to a second identifier for uniquely identifying a second device, a registration unit registering the received first identifier and the second identifier as linkage information in the linkage information storage unit, and a location information storage unit storing a first address which is an invariable address assigned for the second device, a second address which is a variable address assigned for the second device, and the second identifier after associating with them.

Abstract: A network service system comprises a temporary user identifier update request transmitting side device which provides a first service to a user and can transmit a request to update a temporary user identifier shared within a system, a temporary user identifier update request receiving side device, which is connected to the transmitting side device by a network, and can receive the update request from the transmitting side device, and provides a second service cooperating with the first service by using the updated temporary user identifier, and a user proxy device, which is connected to the transmitting side and the receiving side devices by the network, and with which the user receives the two services.

Abstract: A network access control system comprises a reception unit receiving an authentication request message containing an authentication request of use of a secondary access network, the authentication request message is sent from a terminal that can use a core network by using a plurality of different types of access networks including a primary access network and the secondary access network, and arriving at the core network via the primary access network; an authentication unit performing authentication processing in response to the authentication request of the use of the secondary access network; and a transmission unit transmitting an authentication response message about the secondary access network that arrives at the terminal via the primary access network.

Abstract: An information distributing system comprises a startup condition management device inputting and holding a startup condition per user possessing a user terminal, inputting and holding context per user, and comparing the startup condition with the context for the same user and outputting, when both are coincident with each other, a service startup request including startup condition information and the context, and a service execution device outputting, when receiving the service startup request, a service execution request corresponding to the user terminal or controllable resources associated with the user terminal based on the startup condition information and the context included in the service startup request. The startup condition information can be provided from the user terminal or the service execution device. The service execution device outputs the service execution request through a service execution auxiliary device as required.

Abstract: In a system including a first unit retaining a first identifier and a second unit retaining a second identifier for reading out the first identifier from the first unit to transmit, as cooperation information, a combination of the first identifier and the second identifier, for managing the cooperation information, a cooperation information managing apparatus receives the cooperation information and registers the second identifier included in the cooperation information and a group of a plurality of first identifiers including the first identifier included in the cooperation information in a state associated with each other. For managing objects to be used by a user, this enables managing the objects as an aggregation without handling the objects individually, thereby realizing efficient management from a user's point of view.

Abstract: To provide a service customized for each user and for each application, when user host terminal H1 communicates with user host terminal H2 using VoIP, the terminal H1 transmits a service initiation message to service execution units SN1 and SN2. By this message, the service execution unit SN1 and SN2 require service information L-SPC (A) and service information G-SPC (A), both information regards to VoIP service of the term H1, to authentication server A1 respectively. The service execution unit SN1 and SN2 execute a service based on L-SPC (A) and G-SPC (A) respectively. Doing this, service execution unit may provide a service customized for each user and for each application.

Abstract: In a system for performing encryption communications using a common key updated at a predetermined timing between a key transmitting device and a key receiving device, a common key encryption communication system comprising: a key transmitting device including first retaining unit for retaining a most-updated encryption key and a one-generation-anterior encryption key as the above common keys, and first setting unit for setting a one-generation-anterior encryption key for transmission and a most-updated encryption key and a one-generation-anterior encryption key for receipt, respectively; and the above key receiving device including second retaining unit for retaining a most-updated encryption key and a one-generation-anterior encryption key as the above common keys, and second setting unit for setting a most-updated encryption key for transmission, and a most-updated encryption key and a one-generation-anterior key for receipt, respectively.

Abstract: If no encryption key necessary for performing encrypted communication to opposite communication terminal 6 exists, subscriber terminal 5 transmits key exchange proxy request message to service control unit 1. The service control unit 1 transfer the key exchange proxy request to key exchange proxy server 2 based on service profile transmitted from authentication server 3. The key exchange proxy server 2 decides key by transmitting/receiving key exchange message to/from the opposite communication terminal 6. A message including the decided key is transmitted to the service control unit 1. The service control unit transfer the message from the key exchange proxy server 2 with the key to the subscriber terminal 5 based on the service profile. Then, encrypted communication between the subscriber terminal 5 and the opposite communication terminal 6 is performed.

Abstract: An electric vehicle has two driving operation blocks with the same appearance that are provided at both the front and rear ends of the body of the vehicle symmetrically around a point. The vehicle employs a collapsible driver's seat. The vehicle has four driving and steering blocks. Each of the driving and steering blocks contains a wheel, a drive motor that rotates the wheel and a steering gear motor that changes the direction of the wheel. A service floor of the vehicle does not have a wall and a floor height is extremely low for easy access by a senior citizen or a person in a wheel chair.

Abstract: A billing system is disclosed which performs processing in order to provide service to user terminals, and which performs billing for the service provided to the user terminals. In this billing system, user billing profiles UBP are stored in a user billing profile registration unit, by service type and in user terminal units; a billing condition generation unit within a service provider server compares the user billing profile UBP corresponding to a specified service type and to a user terminal with a server billing profile SBP to generate billing conditions, and a billing condition setting unit of a foreign agent sets the billing conditions in a billing unit; and based on the billing conditions thus set, the billing unit executes billing processing for each user terminal.

Abstract: An electric vehicle has two driving operation blocks with the same appearance are provided at both the front and rear ends of the body of the vehicle symmetrically around a point. The vehicle employs a collapsible driver′s seat. The vehicle has four driving and steering block. Each of the driving and steering block contains a wheel, a drive motor that rotates the wheel and steering gear motor that changes the direction of the wheel. The service floor of the vehicle does not have a wall and floor height is extremely low for easy access by a senior citizen or a person in a wheel chair.